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The site is located in Kwai Chung Central District, Dapeng New District, Shenzhen city,which is deeply surrounded by Bijia Mountain, which had the same topographic features as Kwai Chung Center in Dapeng New Area. The whole site is located in the stretch of Bijia Mountain and at the edge of the urban space besides Jinling Road,which is the northernmost road in the site. Both characters set the future of Dapeng Public Affairs Center should respond the strong relationship between "mountain" and "city", thus become an experimental model to explore the interactions between city and nature.
Dapeng Public Affairs Center is located between the natural mountain and the city. How to arrange the massive building here and maintain the infiltration and integration of nature and the city is the origin of the design:
1. In terms of master plan organization, considering the protection of the mountain, the avoidance of excessive building volume, and the different degree of openness of the south interface; after a variety of layout studies, three independent and concentrated building bodies become the optimal solution. The landscape of the whole site will be organized and grown naturally through this scattered architectural layout.
The topographic conditions on site are diverse. The two lines of mountains that appears from north to south in Bijia Mountain, which approximately 40-meter higher above the street, divide the site into four parts: "West Hill", "Valley", "East Hill", and "Triangle Area". The“Triangle Area” is in the southeast corner of the whole site. The” West Hill” and the “East Hill” are all steep slops to the city, which are difficult to be reconstructed. Our design should try the best to preserve the original appearance of the mountain and maintain a harmonious relationship with nature and city. The earthwork excavation should also be balanced in the site, and as far as possible to solve problems like flood discharge and landslides by the topography.
Jinling Road will be the starting point of the future north-south axis of an east-west "urban public corridor" links the Dapeng New District Management Committee, Kwai Chung Street Cultural Square, Hetang Landscape Park, Dapeng Public Affairs Center and other public service institutions and facilities. The Dapeng Public Affairs Center will become a focus of this corridor and its southern boundary and building’s elevation have important urban significance. The design should own a public posture to embrace nature and avoid becoming a boring one as a "high-walled compound" public affair center.
Jinye Avenue is a motorized traffic artery running through the whole new district from north to south, undertaking the rapid traffic in the region. Besides, along the east side of the road are all industrial facilities, different from the west side buildings. The sharp contrast from the boring industrial buildings to the rich civic public space in Hetang Landscape Park o, determines that the sense of public and culture is increasing from east to west: the southwest corner of the site, which linked to Hetang Landscape Park, has the highest public phenomena, while the Jinye Avenue and Jinling intersection has the lowest public genes.
2. In the three-dimensional dimension, by elevating the building body, the "mountain" spreads from the bottom of the building to the city, and the building becomes a fusion between the mountain and the city.
The site's suitable construction area (excluding steep slopes and natural preservation zone) is only 17, 000 square meters. However, the above-ground floor area is required 110, 000 square meters. Due to suitable construction area is a narrow strip area from east to west, buildings cannot be built into double rows. The long-strip buildings would become a forty-meter high, closed to the city streets, two-hundred-meter-long monster.
We split our building groups vertically into 2 parts as the solution: the lower part is controlled in three stories as the urban public community groups which is pluralistic function and scales, and the upper part is a group of floating” function boxes” which is a relatively independent but efficient usable space. The whole plan connects the building ‘s community with the complex mountain topography into a whole body and forms a citizens' wandering path. The design blurs the boundary between "mountain" and "city", interacting and respecting each other. The Dapeng Public Affairs Center is not only the city under the mountain, but also the mountain in the city.
“Function boxes” has 3 centers. Dapeng Memory Center, occupying the southwest corner of the site is the most public area. It contains local archives, chronicles, and science museum. The Public Security Center is in the central part of the site. It contains the police and traffic police barracks. The Traffic Security Center is in the east side and it offers public security& traffic police’s service and life functions.
Three centers are separated along Jinling Road. The large gaps between centers lead a loose but wide vision experience and architectural wandering. The 3 centers have their own type of building according to their different functions. They modestly cooperate with each other but insistently keep their own unique characteristic in the city.
The public functions that store the past (Chronicles and Archives) and display the future (science and technology museum) together form a designed vertical building community.
The community’s urban interface is the science and technology museum which is open to every citizen. It is located on Jinling road. On this road, the science and technology museum forms a transparent facade from east to west, which displays the changing content of the exhibition to the urban space and lights the street view. At the top of the building, groups are the "Media Center" and "Data Center", which are the digital brains of the entire building community and less exposed in public.
Archives and Chronicles have a large amount of storage space, which are distributed together in the middle part of the vertical building community. The relatively closed and solid appearance（beneficial to the preservation of data and energy saving）clearly indicates to the city that they are "containers" for storing the city's memory.
There is a "double helix" gap between the two museums, which not only defines the boundary of the two different management department, but also leads the sight corridor from the city to Bijia Mountain. The sight corridor offers a series of spectacular "see and be seen" platforms. The most extraordinary platform is the 46-meter-high roof of the two museums, which can approach from the ground and used as "Landscape Roof" and "Patriotism Education Base". it is allowed overlooking and enjoying the scenery of the mountains and sea in Dapeng New district.
Designers are going to public security command center and the office part of the traffic police barracks in conditional integration, and incorporating both logistics function of life, get a for field use, and the whole city area more effectively plan:
The new public security command center and the office of traffic police barracks function to form the "public safety group"; It sits in the middle of the whole site. We separated and integrated the window departments of the public security and traffic police (including a series of functions open to the public, such as the DMV) to form a "public affairs hall" under the floating square. This creates a very public, intimate and transparent city image for the dignified public safety center. It allows the city streets activated by the museum to continue to the east, opening up a public corridor on Jinling Road.
There are obvious scale differences between the Public Security Command Center and the traffic police barracks. We hope that the two can not only have their independent expression but also be harmonious pairs. All office space is 15 meters wide plate high-rise, to obtain enough natural lighting and ventilation during the daytime, so that the building energy consumption can be controlled.
The huge Public Security Command Center building presents a north-south trend, on the one hand, obtains the east side open mountain view, on the other hand, faces the city with the elegant architectural language, shows the biggest respect to the mountains and the nature behind. The significantly smaller traffic police barracks and command center are orthogonal layouts and have a clear urban interface. The "Public Security Command Hall ", which requires a large span of space without columns, horizontally connects the two office buildings and provides enough shade below the suspension square in Shenzhen.
Due to site constraints and functional requirements, the building is conceived as a highly efficient "vertical traffic tower". The public service hall, the three-dimensional ramp parking building, the office of the window unit, the office, and duty preparation of the traffic police brigade are vertically superimposed, forming a landscape painting composed of cars, people, plants, and behaviors. Based on the characteristics of traffic police agencies ，a new intensive mechanism model is constructed.
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